I've these events: 
addEventHandler("onClientGUIClick", self.m_LoadButton, function(...) self:LoadButton_Click(...) end, false) 
    addEventHandler("onClientGUIAccepted", self.m_EditAddress, function(...) self:LoadButton_Click(...) end, false) 
    addEventHandler("onClientGUIClick", self.m_BackButton, function(...) self:BackButton_Click(...) end, false) 
    addEventHandler("onClientGUIClick", self.m_ForwardButton, function(...) self:ForwardButton_Click(...) end, false) 
    addEventHandler("onClientGUIClick", self.m_ButtonClose, function(...) self:CloseButton_Click(...) end, false) 
 
And I want to trigger with this event: 
addEventHandler("onClientGUIClick", self.m_ButtonClose, function(...) self:CloseButton_Click(...) end, false) 
 
I think it's a little bit complicated